aboutsummaryrefslogtreecommitdiffstats
path: root/arch/sh/kernel/cpu
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sh/kernel/cpu')
-rw-r--r--arch/sh/kernel/cpu/clock-cpg.c71
1 files changed, 65 insertions, 6 deletions
diff --git a/arch/sh/kernel/cpu/clock-cpg.c b/arch/sh/kernel/cpu/clock-cpg.c
index e604a6f80194..fedc8b84db4c 100644
--- a/arch/sh/kernel/cpu/clock-cpg.c
+++ b/arch/sh/kernel/cpu/clock-cpg.c
@@ -38,6 +38,70 @@ int __init sh_clk_mstp32_register(struct clk *clks, int nr)
return ret;
}
+static long sh_clk_div_round_rate(struct clk *clk, unsigned long rate)
+{
+ return clk_rate_table_round(clk, clk->freq_table, rate);
+}
+
+static int sh_clk_div6_divisors[64] = {
+ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
+ 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32,
+ 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48,
+ 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64
+};
+
+static struct clk_div_mult_table sh_clk_div6_table = {
+ .divisors = sh_clk_div6_divisors,
+ .nr_divisors = ARRAY_SIZE(sh_clk_div6_divisors),
+};
+
+static unsigned long sh_clk_div6_recalc(struct clk *clk)
+{
+ struct clk_div_mult_table *table = &sh_clk_div6_table;
+ unsigned int idx;
+
+ clk_rate_table_build(clk, clk->freq_table, table->nr_divisors,
+ table, NULL);
+
+ idx = __raw_readl(clk->enable_reg) & 0x003f;
+
+ return clk->freq_table[idx].frequency;
+}
+
+static struct clk_ops sh_clk_div6_clk_ops = {
+ .recalc = sh_clk_div6_recalc,
+ .round_rate = sh_clk_div_round_rate,
+};
+
+int __init sh_clk_div6_register(struct clk *clks, int nr)
+{
+ struct clk *clkp;
+ void *freq_table;
+ int nr_divs = sh_clk_div6_table.nr_divisors;
+ int freq_table_size = sizeof(struct cpufreq_frequency_table);
+ int ret = 0;
+ int k;
+
+ freq_table_size *= (nr_divs + 1);
+
+ freq_table = alloc_bootmem(freq_table_size * nr);
+ if (!freq_table)
+ return -ENOMEM;
+
+ for (k = 0; !ret && (k < nr); k++) {
+ clkp = clks + k;
+
+ clkp->ops = &sh_clk_div6_clk_ops;
+ clkp->id = -1;
+ clkp->freq_table = freq_table + (k * freq_table_size);
+ clkp->freq_table[nr_divs].frequency = CPUFREQ_TABLE_END;
+
+ ret = clk_register(clkp);
+ }
+
+ return ret;
+}
+
static unsigned long sh_clk_div4_recalc(struct clk *clk)
{
struct clk_div_mult_table *table = clk->priv;
@@ -51,14 +115,9 @@ static unsigned long sh_clk_div4_recalc(struct clk *clk)
return clk->freq_table[idx].frequency;
}
-static long sh_clk_div4_round_rate(struct clk *clk, unsigned long rate)
-{
- return clk_rate_table_round(clk, clk->freq_table, rate);
-}
-
static struct clk_ops sh_clk_div4_clk_ops = {
.recalc = sh_clk_div4_recalc,
- .round_rate = sh_clk_div4_round_rate,
+ .round_rate = sh_clk_div_round_rate,
};
int __init sh_clk_div4_register(struct clk *clks, int nr,